通信中的盲源分离问题及解决方案探讨  

Discussion of Blind Source Separation Problem and Its Solution in Communication

作　　者：杨柳[1] 张杭[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《通信技术》2014年第1期1-6,共6页Communications Technology

基　　金：国家自然科学基金项目:欠定条件下基于扰信分离的信干比增强方法研究(No.61001106)~~

摘　　要：主要阐述了盲源分离技术应用于无线通信系统时面临的若干问题和解决方案的研究现状。在无线通信系统中,参与混合的源信号是射频通信信号和干扰,这些源信号往往具有循环平稳特性;完成源的混合的无线信道往往受环境影响而发生变化,即具有时变特性;受客观实际条件的限制,观测信号数目往往少于混合源的数目,即表现为欠定混合特性。因此,将盲源分离理论应用于无线通信系统中时,需要特别关注的是循环平稳源、时变、欠定等条件下的盲分离问题。This paper mainly describes the problems and its solutions of blind source separation （BSS） in wireless communication system. In wireless communication system, the source signals are radio frequency signals or interference signals with cyclostationarity; meanwhile, the wireless channel where the sources are mixed is easily influenced by the environment, as a result, it is time-varying; in addition, restricted by the objective conditions, the number of observation signal is often less than the source signal, which is called underdetermined. Consequently, in wireless communication system much attention should be paid to BSS problems under the eyclostationarity and time-varying and underdetermined conditions.

关 键 词：盲源分离 无线通信 循环平稳 时变混合 欠定混合 

分 类 号：TN92[电子电信—通信与信息系统]